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Costs Incurred for Property Acquisition, Exploration and Development (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities [Line Items] |  |  |  |  |
Acquisitions |  |  |  | $ 404,252 rrc_CostsIncurredAcquisitionOfOilAndGasPropertiesFromBusinessCombination | [1],[2]
Acreage purchases | 13,354 us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties | [1] |  | 226,475 us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties | [1]
Development | 240,792 us-gaap_CostsIncurredDevelopmentCosts | [1] |  | 1,119,896 us-gaap_CostsIncurredDevelopmentCosts | [1]
Gas gathering facilities: |  |  |  |  |
Development | 2,184 rrc_CostIncurredTransportationAndFieldEquipmentCosts | [1] |  | 13,137 rrc_CostIncurredTransportationAndFieldEquipmentCosts | [1]
Subtotal | 285,272 rrc_CostIncurredOfOilAndGasProperties | [1] |  | 2,008,233 rrc_CostIncurredOfOilAndGasProperties | [1]
Asset retirement obligations | 15,813 us-gaap_CostsIncurredAssetRetirementObligationIncurred | [1] | 3,218 us-gaap_CostsIncurredAssetRetirementObligationIncurred | 56,822 us-gaap_CostsIncurredAssetRetirementObligationIncurred | [1]
Total costs incurred | 301,085 us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities | [1] |  | 2,065,055 us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities | [1]
Drilling |  |  |  |  |
Exploration: |  |  |  |  |
Exploration costs incurred | 21,056 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_DrillingCostMember | [1] |  | 180,925 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_DrillingCostMember | [1]
Expense |  |  |  |  |
Exploration: |  |  |  |  |
Exploration costs incurred | 7,154 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_ExpenseMember | [1] |  | 58,979 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_ExpenseMember | [1]
Stock-based compensation expense |  |  |  |  |
Exploration: |  |  |  |  |
Exploration costs incurred | $ 732 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_StockBasedCompensationExpenseMember | [1] |  | $ 4,569 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_StockBasedCompensationExpenseMember | [1]
[1] | Includes costs incurred whether capitalized or expensed.
[2] | The year ended December 31, 2014 represents the EQT assets in Virginia we received as part of the Conger Exchange transaction. The transaction was recorded at fair value and we also received $145.0 million in cash, before closing adjustments.

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